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Aleksandr [31]
3 years ago
5

Help! I asked one of the brainly tutors and they got it wrong! Please help!

Mathematics
1 answer:
sladkih [1.3K]3 years ago
5 0

Step-by-step explanation:

12x-15-4x+1=-6

12x-4x= -6+15-1

8x= 8

x=1

my answer is 100 % correct

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AB lies on a number line. The coordinate of point A is -6. Given that AB=20, what are two possible coordinates for point B?
Dafna1 [17]

Answer:

<em>-26 or 14</em>

Step-by-step explanation:

Given that

Coordinate of point A is -6.

Length of AB = 20

To find:

Coordinates for the point B = ?

Solution:

We are given that:

AB = 20

In other words, we can use modulus function to define the distance between A and B:

|Coordinates of B - Coordinates of A| = 20

Let the coordinates of B = x

Kindly refer to the attached image for the given situation.

Point B might be either on the left or on the right side of A.

That means:

|x-(-6)| = 20\\\Rightarrow |x+6|=20

Now, let us have a look at the modulus function:

|y|=\left \{ {-{y}\ if\ y0} \right.

So,

|x+6|=\left \{ {-{(x+6)}\ if\ (x+6)0} \right.

(x+6 ) =20\\\Rightarrow x =14

-(x+6 ) =20\\\Rightarrow x =-26

Therefore, the answer is:

<em>-26 or 14</em>

4 0
3 years ago
How many pounds of candy worth 70 cents a pound must be mixed with 30 pounds of candy worth 90 cents a pound to produce a mixtur
Svet_ta [14]
<h3>Answer:</h3>

B) 10 pounds

<h3>Explanation:</h3>

Let x represent the amount of 70¢ candy to be added. The value of the mixture can be written as ...

... 90×30 + 70x = 85×(30+x) . . . . . where 30+x is the total weight of the mix

... 2700 +70x = 2550 +85x

... 150 = 15x . . . . . . add -70x-2550

... 10 = x . . . . . . . . . divide by the coefficient of x

10 pounds of candy at 70¢/lb must be added.

5 0
3 years ago
Ok maths experts ,here is your trigonometric question
EleoNora [17]

Answer:


Step-by-step explanation:

i don't take trig :/

6 0
3 years ago
A sum of $900 is shared among Nas, Sam and Kristine in the ratio p: 5: 7. If Nas receives $120, what is the value of p?​
weqwewe [10]

Answer:

p+5+7=p+12

p/(p+12) ×900=120

900p=120(p+12)

90p=12(p+12)

90p=12p+144

90p-12p=144

78p=144

p=144/78

I would appreciate if my answer is chosen as a brainliest answer

8 0
2 years ago
Read 2 more answers
A car's odometer starts at 25 miles and for every 25 miles traveled, 1 gallon of gas is used.
frosja888 [35]
Top left graph. Shows every gallon of gas gets 25 miles.
6 0
3 years ago
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